(a) This function shall include expenses incurred directly in the in-flight operation of aircraft and expenses attaching to the holding of aircraft and aircraft operation personnel in readiness for assignment to an in-flight status.

(b) This function shall not include expenses incurred in repairing, servicing or storing aircraft, expenses incurred on the ground in protecting and controlling the in-flight movement of aircraft, or compensation of ground personnel and other expenses incurred in scheduling or preparing aircraft or aircraft operational personnel for flight assignment. Such expenses shall be included in function 5400 Maintenance, or function 6400 Aircraft and Traffic Servicing.

(a) This function shall include all expenses, both direct and indirect, incurred in the repair and upkeep of property and equipment as may be required to meet operating and safety standards; in inspecting or checking property and equipment in accordance with prescribed operational standards; and in polishing or cleaning property and equipment when such polishing or cleaning is not an incidental routine in connection with the normal productive use of property and equipment.

(b) This function shall include the cost of direct labor, materials, and outside services and maintenance overhead or other costs associated with maintenance operations regardless of the location at which incurred.

(c) This function shall not include costs incurred in the construction, improvement, or modification of property and equipment even when necessitated to meet new or changed operating or safety standards. Such costs shall be charged to appropriate property and equipment accounts.

(d) Costs incurred by aircraft handling personnel in visual inspection, minor check and servicing of aircraft, while in line service, shall not be included in this function when performed as an incidental routine during the normal productive use of aircraft but

shall be included in function 6400 Aircraft and Tariff Servicing.

(e) Both Group II air carriers and Group III air carriers shall maintain the following subfunctions:

5200 Direct Maintenance.

a. This subfunction shall include the costs of labor, materials and outside services consumed directly in periodic maintenance operations and the maintenance and repair of property and equipment of all types and classes, regardless of the location at which incurred, exclusive of property and equipment carried in balance sheet accounts 1634 Maintenance and Engineering Equipment and 1640.1 Maintenance Buildings and Improvements, which shall be included in subfunction 5300 Maintenance Burden.

b. The cost of direct labor, materials and supplies, as well as outside repairs, used in the maintenance and repair of property and equipment shall be recorded on running job orders or tickets covering repairs and periodic inspections except servicing. Where a number of like items are maintained on a group basis, it will be necessary to maintain only one job order for each group.

c. When supervisory personnel such 85 crew chiefs, inspectors and foremen are engaged in direct labor in connection with equipment maintenance,

a proportionate

part of their salaries and wages shall be charged to the appropriate direct labor accounts. The cost of transporting property to and from shops for repair and maintenance shall be included as a part of the cost of the materials and supplies used in the repair or maintenance of such property and equipment. Transportation charges, toms and duties, etc., shall be included in the cost of repairs and maintenance operations when made by outside parties.

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a. This subfunction shall include all overhead or general expenses used directly in the activities involved in periodic maintenance operations and the maintenance and repair of property and equipment of all types and classes, including the cost of direct labor, materials and outside services used in the maintenance and repair of property and equipment carried in balance sheet accounts 1634 Maintenance and Engineering Equipment, and 1640.1 Maintenance Buildings and Improvements. It shall include penses related to the administration of maintenance stocks and stores, the keeping of pertinent maintenance operations records, and the scheduling, controlling, planning and supervision of maintenance operations. b. This subfunction shall not include expenses related to financial accounting, other purchasing or overhead activities which are of general applicability to all operating functions. Such expenses shall be included in function 6800 General and Administrative.

c. This subfunction shall include only those expenses attributable to the current air transport operations of the air carrier. Maintenance burden associated with capital projects of the air carrier, other than overhauls of airframes and aircraft engines, shall be allocated thereto in accordance with the provisions of section 2-9(b). Maintenance burden incurred in common with services to other companies and operating entities shall be allocated thereto on a pro rata basis unless such services are so infrequent in performance or small in volume as to result in no appreciable demands upon the air carrier's maintenance facilities. When overhauls of airframes or aircraft engines are as a consistent practice accounted for on an accrual basis instead of expensed directly, maintenance burden shall be allocated thereto on a pro rata basis. Standard burden rates may be employed for quarterly allocations of maintenance burden provided the rates are reviewed at the close of each fiscal year, at least. When the actual burden rate for the year differs materially from the standard burden rate applied, adjustment shall be made to reflect the actual costs incurred for the full accounting year. Allocations of maintenance burden to capital projects, and service sales to others shall be effected through the individual maintenance burden objective accounts, except that the air carrier may effect such allocations by credits to profit and loss account 77 Uncleared Expense Credits under circumstances in which the use of that account will not undermine the significance of the individual maintenance burden objective accounts in terms of the expense levels associated with the air carrier's air transport services. Maintenance burden allocated to overhauls shall be credited to profit and loss subaccounts 5372.2 or 5372.7 Airworthiness Reserve Charges. In accordance with the provisions of section 22(d) or 32(d), as applicable, each air carrier shall file with the Civil Aeronautics Board a statement in which procedures followed in allocating maintenance burden between current transport services, overhauls, capital projects and outside services are fully explained.

[ER-327, 26 F.R. 4222, May 16, 1961, as amended by ER-483, 32 F.R. 2811, Feb. 11, 1967]

and Traffic Servicing and 6700 Promotion and Sales, respectively.

6400

Aircraft and Traffic Servicing.

(a) This function shall include the compensation of ground personnel and other expenses incurred on the ground incident to the protection and control of the in-flight movement of aircraft, scheduling and preparing aircraft operational crews for flight assignment, handling and servicing aircraft while in line operation, servicing and handling traffic on the ground, subsequent to the issuance of documents establishing the air carrier's responsibility to provide air transportation, and in-flight expenses of handling and protecting all nonpassenger traffic including passenger baggage.

(b) This function shall include only those aircraft servicing and cleaning expenses which are incurred as an incidental routine during the normal productive use of aircraft in line operations. It shall not include expenses incurred in the repair and maintenance of property and equipment, or in checking or inspecting property and equipment in accordance with prescribed operational standards when such activities are not an incidental routine during the normal productive use of aircraft. Such expenses shall be included in function 5400 Maintenance.

(c) This function shall not include expenses incurred in securing traffic, arranging aircraft space for traffic sold or in issuing documents confirming traffic sales and establishing the air carrier's responsibilities to provide air transportation. Such expenses shall be included in function 6700 Promotion and Sales. However, for purposes of this system of accounts, expenses attributable to the operation of airport traffic offices, excluding reservation centers, shall be included in this function. Expenses attributable to the operation of reservation or aircraft space control centers shall be included in function 6700 Promotion and Sales regardless of the location at which incurred.

(d) Group III air carriers shall further subdivide this function as follows:

6100 Aircraft Servicing.

a. This subfunction shall include the compensation of ground personnel and other expenses incurred on the ground incident to the protection and control of the in-flight movement of aircraft; scheduling or preparing aircraft operational crews for flight

assignment; landing and parking aircraft; visual inspection, routine checking, servicing and fueling of aircraft; and other expenses incurred on the ground incident to readying for arrival and take-off of aircraft.

6200 Traffic Servicing.

a. This subfunction shall include the compensation of ground personnel and other expenses incurred on the ground incident to handling traffic of all types and classes on the ground subsequent to the issuance of documents establishing the air carrier's responsibility to provide air transportation. Expenses attributable to the operation of airport traffic offices shall also be included in this subfunction; expenses attributable to reservations centers shall be excluded. It shall include expenses incurred in both enplaning and deplaning traffic as well as expenses incurred in preparation for planement and all expenses subsequent to deplanement.

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b. This subfunction shall also include costs incurred in handling and protecting all nonpassenger traffic while in flight. It shall not include expenses incurred in contributing to the comfort, safety and convenience of passengers while in flight or when flights are interrupted. Such expenses shall be included in function 5500 Passenger Service.

6300

Servicing Administration.

a. This subfunction shall include expenses of a general nature incurred in performing supervisory or administrative activities relating solely and in common to subfunctions 6100 Aircraft Servicing and 6200 Traffic Servicing.

b. This subfunction shall not include supervisory or administrative expenses which can be charged directly to subfunction 6100 Aircraft Servicing or subfunction 6200 Traffic Servicing. Nor shall this subfunction include expenses of a general administrative character and of significant amount regularly contributing to operating functions generally. Such expenses shall be included in function 6800 General and Administrative. c. The expenses in this subfunction shall be recorded separately for each geographic location at which incurred.

expenses incurred in developing tariffs and schedules for publication.

(c) This function shall not include expenses incurred in handling traffic subsequent to the issuance of documents establishing the air carrier's responsibility to provide air transportation which shall be included in functions 5500 Passenger Service and 6400 Aircraft and Traffic Servicing. However, for purposes of this system of accounts, expenses attributable to the operation of airport traffic offices, excluding reservation centers, shall be included in function 6400 Aircraft and Traffic Servicing. Expenses attributable to the operation of reservation or aircraft space control centers shall be included in function 6700 Promotion and Sales regardless of the location at which incurred.

(d) Group III air carriers shall subdivide this function as follows:

6500 Reservations and Sales.

This subfunction shall include expenses incident to direct sales solicitation, documenting sales, controlling and arranging or confirming aircraft space sold, and in developing tariffs and schedules for publication. It shall also include expenses attributable to the operation of city traffic offices. Expenses incurred in stimulating traffic and promoting the air carrier or air transportation generally shall not be included in this subfunction but in subfunction 6600 Advertising and Publicity.

which shall be included in function 6700 Promotion and Sales. Nor shall this function include expenses, regularly applicable in large part to a specific function, which contribute only incidentally, or in small amount, to various other functions. Such expenses when of such size as will not distort the function to which predominantly related, shall be included in the specific function to which regularly related. However, expenses of a general administrative character and of significant amount regularly contributing to operating functions generally shall be included in this function. 7000 Depreciation and Amortization.

This function shall include all charges to expense to record losses suffered through current exhaustion of the serviceability of property and equipment due to wear and tear from use and the action of time and the elements, which are not replaced by current repairs, as well as losses in serviceability occasioned by obsolescence, supersession, discoveries, change in popular demand or action by public authority. It shall also include charges for the amortization of capitalized developmental and preoperating costs, and other intangible assets applicable to the performance of air transportation. (See section 5-5 and sections 6-1830 and 1880.)

(a) The objective accounts established in this section are prescribed for all air carrier groups. Each air carrier shall credit the gross revenues accruing from services ordinarily associated with air transportation or its incidental services, to the appropriate account established for each revenue source. Expenses incident to transport services from which revenue is earned shall not be charged to the related revenue account. However, direct costs of forwarding traffic as a result of interrupted trips, and refunds of sales, shall be charged to the applicable revenue account.

(b) Revenues accruing from transactions conducted in foreign currencies shall be credited to the applicable objective accounts at the United States dollar equivalent, at currently realizable, or officially prescribed rates of exchange, of

66-031 0-72- -17

Record here revenue from the air transportation of passengers moving at special fares reduced from the first class or premium fares which are predicated upon both the operation of specifically designated aircraft space and a reduction in the quality of service regularly and ordinarily provided. 02 United States Mail.

(a) Record here revenue from the transportation by air of United States mail at service mail rates established by the Civil Aeronautics Board.

(b) Fines and penalties imposed by the United States Government in connection with the carriage of mail shall not be charged to this account but to profit and loss account 89 Miscellaneous Nonoperating Debits.

(c) This account shall be subdivided as follows by all air carrier groups: 02.1 Priority.

Record here revenue from mail bearing postage at rates established specifically for air mail service or mail moving at service transportation rates equivalent to those estabilshed for mail bearing the full air mail postage.

whether scheduled or nonscheduled, where each passenger or shipment receiving transportation is individually documented and does not obtain exclusive use of an aircraft.

(b) This account shall not include revenues or fees received from other air carriers for flight facilities furnished or operated by the accounting air carrier where the remuneration paid by the party receiving transportation accrues directly to, and the responsibility for providing transportation is that of, other air carriers. Such revenues and related expenses shall be included in profit and loss account 11 Rents, 13 Interchange Sales Associated Companies, 15 Interchange Sales-Outside, or 18 Other Incidental Revenues, as appropriate.

(c) This account shall be subdivided as follows by all air carrier groups: 07.1

Passenger.

Record here revenue from the transportation of passengers and their personal baggage at rates set forth in passenger charter tariffs.

07.2 Property.

Record here revenue from the transportation of property at rates set forth in property charter tariffs and revenue from the transportation of passengers and property simultaneously at rates set forth in mixed passenger and property charter tariffs.

08 Section 406 Subsidy.

Record here amounts of compensation fixed pursuant to section 406(b) of the Federal Aviation Act which exceed amounts accruing to the air carrier under service mail rates established by the Civil Aeronautics Board for the carriage of United States mail.

09 Foreign Exchange Fluctuation Adjustments.

Record here gains or losses from transactions involving currency conversions resulting from normal, routine, day-to-day fluctuations in rates of foreign exchange in accordance with provisions of section 2-3. Gains or losses of a nonroutine abnormal character shall not be entered in this account but in profit and loss account 85 Foreign Exchange Adjustments.

10 Hotel, Restaurant and Food Service.

(a) Record here revenues from and expenses related to the operation of hotels and restaurants and similar facilities, and from sales of food. (See section 13-51.)